1 /*****************************************************************************
2 * au.c : au file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2003 VideoLAN
5 * $Id: au.c,v 1.6 2003/09/07 22:48:29 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
30 #include <vlc/input.h>
34 /*****************************************************************************
36 *****************************************************************************/
37 static int Open ( vlc_object_t * );
38 static void Close ( vlc_object_t * );
41 set_description( _("AU demuxer") );
42 set_capability( "demux", 142 );
43 set_callbacks( Open, Close );
48 * - all adpcm things (I _NEED_ samples)
51 /*****************************************************************************
53 *****************************************************************************/
54 static int DemuxPCM ( input_thread_t * );
55 /* TODO static int DemuxADPCM ( input_thread_t * ); */
60 AU_MULAW_8 = 1, /* 8-bit ISDN u-law */
61 AU_LINEAR_8 = 2, /* 8-bit linear PCM */
62 AU_LINEAR_16 = 3, /* 16-bit linear PCM */
63 AU_LINEAR_24 = 4, /* 24-bit linear PCM */
64 AU_LINEAR_32 = 5, /* 32-bit linear PCM */
65 AU_FLOAT = 6, /* 32-bit IEEE floating point */
66 AU_DOUBLE = 7, /* 64-bit IEEE floating point */
67 AU_ADPCM_G721 = 23, /* 4-bit CCITT g.721 ADPCM */
68 AU_ADPCM_G722 = 24, /* CCITT g.722 ADPCM */
69 AU_ADPCM_G723_3 = 25, /* CCITT g.723 3-bit ADPCM */
70 AU_ADPCM_G723_5 = 26, /* CCITT g.723 5-bit ADPCM */
71 AU_ALAW_8 = 27 /* 8-bit ISDN A-law */
82 #ifdef HAVE_ATTRIBUTE_PACKED
83 __attribute__((__packed__))
86 uint32_t i_header_size;
89 uint32_t i_sample_rate;
102 es_descriptor_t *p_es;
105 mtime_t i_frame_length;
109 /*****************************************************************************
110 * Open: check file and initializes structures
111 *****************************************************************************/
112 static int Open( vlc_object_t * p_this )
114 input_thread_t *p_input = (input_thread_t *)p_this;
119 vlc_fourcc_t i_fourcc;
123 /* a little test to see if it's a au file */
124 if( input_Peek( p_input, &p_peek, 4 ) < 4 )
126 msg_Warn( p_input, "AU module discarded (cannot peek)" );
129 if( strncmp( p_peek, ".snd", 4 ) )
131 msg_Warn( p_input, "AU module discarded (not a valid file)" );
135 p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
139 if( ( p_sys->s = stream_OpenInput( p_input ) ) == NULL )
141 msg_Err( p_input, "cannot create stream" );
146 stream_Read( p_sys->s, NULL, 4 ); /* cannot fail */
149 if( stream_Read( p_sys->s, &p_sys->au, sizeof( au_t ) ) < (int)sizeof( au_t ) )
151 msg_Err( p_input, "cannot load header" );
154 p_sys->au.i_header_size = GetDWBE( &p_sys->au.i_header_size );
155 p_sys->au.i_data_size = GetDWBE( &p_sys->au.i_data_size );
156 p_sys->au.i_encoding = GetDWBE( &p_sys->au.i_encoding );
157 p_sys->au.i_sample_rate = GetDWBE( &p_sys->au.i_sample_rate );
158 p_sys->au.i_channels = GetDWBE( &p_sys->au.i_channels );
161 "au file: header_size=%d data_size=%d encoding=0x%x sample_rate=%d channels=%d",
162 p_sys->au.i_header_size,
163 p_sys->au.i_data_size,
164 p_sys->au.i_encoding,
165 p_sys->au.i_sample_rate,
166 p_sys->au.i_channels );
168 if( p_sys->au.i_header_size < 24 )
170 msg_Warn( p_input, "AU module discarded (not a valid file)" );
174 /* skip extra header data */
175 if( p_sys->au.i_header_size > 4 + sizeof( au_t ) )
177 stream_Read( p_sys->s, NULL, p_sys->au.i_header_size - 4 - sizeof( au_t ) );
180 /* Create WAVEFORMATEX structure */
181 p_sys->wf.nChannels = p_sys->au.i_channels;
182 p_sys->wf.nSamplesPerSec= p_sys->au.i_sample_rate;
183 p_sys->wf.cbSize = 0;
185 switch( p_sys->au.i_encoding )
187 case AU_ALAW_8: /* 8-bit ISDN A-law */
188 p_sys->wf.wFormatTag = WAVE_FORMAT_ALAW; // FIXME ??
189 p_sys->wf.wBitsPerSample = 8;
190 p_sys->wf.nBlockAlign = 1 * p_sys->wf.nChannels;
191 i_fourcc = VLC_FOURCC( 'a','l','a','w' );
195 case AU_MULAW_8: /* 8-bit ISDN u-law */
196 p_sys->wf.wFormatTag = WAVE_FORMAT_MULAW; // FIXME ??
197 p_sys->wf.wBitsPerSample = 8;
198 p_sys->wf.nBlockAlign = 1 * p_sys->wf.nChannels;
199 i_fourcc = VLC_FOURCC( 'u','l','a','w' );
203 case AU_LINEAR_8: /* 8-bit linear PCM */
204 p_sys->wf.wFormatTag = WAVE_FORMAT_PCM;
205 p_sys->wf.wBitsPerSample = 8;
206 p_sys->wf.nBlockAlign = 1 * p_sys->wf.nChannels;
207 i_fourcc = VLC_FOURCC( 't','w','o','s' );
211 case AU_LINEAR_16: /* 16-bit linear PCM */
212 p_sys->wf.wFormatTag = WAVE_FORMAT_PCM;
213 p_sys->wf.wBitsPerSample = 16;
214 p_sys->wf.nBlockAlign = 2 * p_sys->wf.nChannels;
215 i_fourcc = VLC_FOURCC( 't','w','o','s' );
219 case AU_LINEAR_24: /* 24-bit linear PCM */
220 p_sys->wf.wFormatTag = WAVE_FORMAT_PCM;
221 p_sys->wf.wBitsPerSample = 24;
222 p_sys->wf.nBlockAlign = 3 * p_sys->wf.nChannels;
223 i_fourcc = VLC_FOURCC( 't','w','o','s' );
227 case AU_LINEAR_32: /* 32-bit linear PCM */
228 p_sys->wf.wFormatTag = WAVE_FORMAT_PCM;
229 p_sys->wf.wBitsPerSample = 32;
230 p_sys->wf.nBlockAlign = 4 * p_sys->wf.nChannels;
231 i_fourcc = VLC_FOURCC( 't','w','o','s' );
235 case AU_FLOAT: /* 32-bit IEEE floating point */
236 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
237 p_sys->wf.wBitsPerSample = 32;
238 p_sys->wf.nBlockAlign = 4 * p_sys->wf.nChannels;
239 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_FLOAT );
243 case AU_DOUBLE: /* 64-bit IEEE floating point */
244 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
245 p_sys->wf.wBitsPerSample = 64;
246 p_sys->wf.nBlockAlign = 8 * p_sys->wf.nChannels;
247 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_DOUBLE );
251 case AU_ADPCM_G721: /* 4-bit CCITT g.721 ADPCM */
252 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
253 p_sys->wf.wBitsPerSample = 0;
254 p_sys->wf.nBlockAlign = 0 * p_sys->wf.nChannels;
255 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_ADPCM_G721 );
256 i_cat = AU_CAT_ADPCM;
259 case AU_ADPCM_G722: /* CCITT g.722 ADPCM */
260 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
261 p_sys->wf.wBitsPerSample = 0;
262 p_sys->wf.nBlockAlign = 0 * p_sys->wf.nChannels;
263 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_ADPCM_G722 );
264 i_cat = AU_CAT_ADPCM;
267 case AU_ADPCM_G723_3: /* CCITT g.723 3-bit ADPCM */
268 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
269 p_sys->wf.wBitsPerSample = 0;
270 p_sys->wf.nBlockAlign = 0 * p_sys->wf.nChannels;
271 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_ADPCM_G723_3 );
272 i_cat = AU_CAT_ADPCM;
275 case AU_ADPCM_G723_5: /* CCITT g.723 5-bit ADPCM */
276 p_sys->wf.wFormatTag = WAVE_FORMAT_UNKNOWN;
277 p_sys->wf.wBitsPerSample = 0;
278 p_sys->wf.nBlockAlign = 0 * p_sys->wf.nChannels;
279 i_fourcc = VLC_FOURCC( 'a', 'u', 0, AU_ADPCM_G723_5 );
280 i_cat = AU_CAT_ADPCM;
284 msg_Warn( p_input, "unknow encoding=0x%x", p_sys->au.i_encoding );
285 i_cat = AU_CAT_UNKNOWN;
288 p_sys->wf.nAvgBytesPerSec = p_sys->wf.nSamplesPerSec * p_sys->wf.nChannels * p_sys->wf.wBitsPerSample / 8;
292 if( i_cat == AU_CAT_UNKNOWN || i_cat == AU_CAT_ADPCM )
294 p_sys->i_frame_size = 0;
295 p_sys->i_frame_length = 0;
297 msg_Err( p_input, "unsupported codec/type (Please report it)" );
302 int i_samples, i_modulo;
304 /* read samples for 50ms of */
305 i_samples = __MAX( p_sys->wf.nSamplesPerSec / 20, 1 );
307 p_sys->i_frame_size = i_samples * p_sys->wf.nChannels * ( (p_sys->wf.wBitsPerSample + 7) / 8 );
309 if( p_sys->wf.nBlockAlign > 0 )
311 if( ( i_modulo = p_sys->i_frame_size % p_sys->wf.nBlockAlign ) != 0 )
313 p_sys->i_frame_size += p_sys->wf.nBlockAlign - i_modulo;
317 p_sys->i_frame_length = (mtime_t)1000000 *
319 (mtime_t)p_sys->wf.nSamplesPerSec;
321 p_input->pf_demux = DemuxPCM;
322 p_input->pf_demux_control = demux_vaControlDefault;
325 /* create one program */
326 vlc_mutex_lock( &p_input->stream.stream_lock );
327 if( input_InitStream( p_input, 0 ) == -1)
329 vlc_mutex_unlock( &p_input->stream.stream_lock );
330 msg_Err( p_input, "cannot init stream" );
333 if( input_AddProgram( p_input, 0, 0) == NULL )
335 vlc_mutex_unlock( &p_input->stream.stream_lock );
336 msg_Err( p_input, "cannot add program" );
340 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
341 p_input->stream.i_mux_rate = p_sys->wf.nAvgBytesPerSec / 50;
343 p_sys->p_es = input_AddES( p_input, p_input->stream.p_selected_program,
344 0x01, AUDIO_ES, NULL, 0 );
346 p_sys->p_es->i_stream_id = 0x01;
347 p_sys->p_es->i_fourcc = i_fourcc;
348 p_sys->p_es->p_waveformatex= malloc( sizeof( WAVEFORMATEX ) );
349 memcpy( p_sys->p_es->p_waveformatex, &p_sys->wf, sizeof( WAVEFORMATEX ) );
351 input_SelectES( p_input, p_sys->p_es );
353 p_input->stream.p_selected_program->b_is_ok = 1;
354 vlc_mutex_unlock( &p_input->stream.stream_lock );
361 stream_Release( p_sys->s );
367 /*****************************************************************************
368 * DemuxPCM: read packet and send them to decoders
369 *****************************************************************************
370 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
371 *****************************************************************************/
372 static int DemuxPCM( input_thread_t *p_input )
374 demux_sys_t *p_sys = p_input->p_demux_data;
377 if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
379 int64_t i_pos = stream_Tell( p_sys->s );
381 if( p_sys->wf.nBlockAlign != 0 )
383 i_pos += p_sys->wf.nBlockAlign - i_pos % p_sys->wf.nBlockAlign;
384 if( stream_Seek( p_sys->s, i_pos ) )
386 msg_Err( p_input, "Seek failed(cannot resync)" );
391 input_ClockManageRef( p_input,
392 p_input->stream.p_selected_program,
393 p_sys->i_time * 9 / 100 );
395 if( ( p_pes = stream_PesPacket( p_sys->s, p_sys->i_frame_size ) ) == NULL )
397 msg_Warn( p_input, "cannot read data" );
401 p_pes->i_pts = input_ClockGetTS( p_input,
402 p_input->stream.p_selected_program,
403 p_sys->i_time * 9 / 100 );
405 if( !p_sys->p_es->p_decoder_fifo )
407 msg_Err( p_input, "no audio decoder" );
408 input_DeletePES( p_input->p_method_data, p_pes );
412 input_DecodePES( p_sys->p_es->p_decoder_fifo, p_pes );
413 p_sys->i_time += p_sys->i_frame_length;
417 /*****************************************************************************
418 * Close: frees unused data
419 *****************************************************************************/
420 static void Close( vlc_object_t * p_this )
422 input_thread_t *p_input = (input_thread_t *)p_this;
423 demux_sys_t *p_sys = p_input->p_demux_data;
425 stream_Release( p_sys->s );